Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/58363
Campo DC Valoridioma
dc.contributor.authorOsterrieth, Margaritaen_US
dc.contributor.authorFernanda Alvarez, Mariaen_US
dc.contributor.authorFernando Gallardo, Juanen_US
dc.contributor.authorSaavedra, Julioen_US
dc.contributor.authorFernández Turiel,José Luisen_US
dc.contributor.authorRodriguez-Gonzalez, Alejandroen_US
dc.contributor.authorPérez Torrado, Francisco Joséen_US
dc.contributor.authorRejas, Martaen_US
dc.date.accessioned2019-12-12T13:06:12Z-
dc.date.available2019-12-12T13:06:12Z-
dc.date.issued2019en_US
dc.identifier.issn1040-6182en_US
dc.identifier.otherWoS-
dc.identifier.urihttp://hdl.handle.net/10553/58363-
dc.description.abstractWe compare the silicophytolith record of current soils and Holocene palaeosols from two sedimentary sequences in a region between the Chaco-Pampean Plain and the Puna (Tolombon section in Santa Maria Valley, and Tafi del Valle section in Tafi Valley), NW Argentina. These two geographic areas are separated by the Aconquija-Cumbres Calchaquies ranges, a climatic barrier to the wet Atlantic winds. These sequences contain volcanic ash deposits recording two large eruptions occurred during Holocene in the Southern Puna in the Central Volcanic Zone of the Andes, from the Cueros de Purulla volcano (ca. 7820 BP) and the Cerro Blanco Volcanic Complex (ca. 4200 cal BP). These ash-fall deposits buried soils and preserved their silicophytolith record, allowing the use of this palaeoenvironmental proxy to clarify the vegetation prior these two volcanic events. The silicophytolith assemblages yield evidence for a desert shrubland when Tolombon palaeosol was formed, similar to the presentday environment in the Santa Maria Valley, with presence of C-4 grasses (Chloridoideae and Panicoidae). Instead, the climate was cooler and wetter ca. 4200 cal BP than currently in the Tafi Valley, increasing over time aridity and abundance of C-4 grasses (Chloridoidae, Panicoideae), and decreasing the quantity of C-3 grasses (Pooideae). Prehistorical and historical land use also contributed to this change. The impact of these large volcanic ash-falls on vegetation did not translate in an abrupt change on phytodiversity. Results point out a stable arid environment during Holocene in the Santa Maria Valley whereas the Tafi Valley was more sensitive to environmental changes due to its location in the eastern slopes of Aconquija-Cumbres Calchaquies ranges, more exposed to the wet Atlantic winds.en_US
dc.languageengen_US
dc.relationApoyo A Grupos de Investigación Consolidados: Divulgación de Resultados Científicos Del Grupo Geovol y Preparación de Futuros Trabajos de Investigación.en_US
dc.relation.ispartofQuaternary Internationalen_US
dc.sourceQuaternary International [ISSN 1040-6182], v. 522, p. 103-112en_US
dc.subject250621 Vulcanologíaen_US
dc.subject.otherSanta Maria Valleyen_US
dc.subject.otherMidholoceneen_US
dc.subject.otherMechanismsen_US
dc.subject.otherPhytolithsen_US
dc.subject.otherPoaceaeen_US
dc.subject.otherClimateen_US
dc.subject.otherSilicaen_US
dc.titlePalaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentinaen_US
dc.typeinfo:eu-repo/semantics/Articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.quaint.2019.07.001
dc.identifier.scopus85068257459
dc.identifier.isi000485032800009-
dc.contributor.authorscopusid6602935194
dc.contributor.authorscopusid27967584800
dc.contributor.authorscopusid7101888500
dc.contributor.authorscopusid7202229189
dc.contributor.authorscopusid7003843565
dc.contributor.authorscopusid25959720400
dc.contributor.authorscopusid6602207526
dc.contributor.authorscopusid48761798900
dc.identifier.eissn1873-4553-
dc.description.lastpage112-
dc.description.firstpage103-
dc.relation.volume522-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.contributor.daisngid997284
dc.contributor.daisngid35030855
dc.contributor.daisngid31546361
dc.contributor.daisngid3270037
dc.contributor.daisngid31542135
dc.contributor.daisngid29607840
dc.contributor.daisngid31646795
dc.contributor.daisngid8833022
dc.contributor.wosstandardWOS:Osterrieth, M
dc.contributor.wosstandardWOS:Alvarez, MF
dc.contributor.wosstandardWOS:Gallardo, JF
dc.contributor.wosstandardWOS:Saavedra, J
dc.contributor.wosstandardWOS:Fernandez-Turiel, JL
dc.contributor.wosstandardWOS:Rodriguez-Gonzalez, A
dc.contributor.wosstandardWOS:Perez-Torrado, FJ
dc.contributor.wosstandardWOS:Rejas, M
dc.date.coverdateJulio 2019
dc.identifier.ulpgces
dc.description.sjr1,015
dc.description.jcr2,003
dc.description.sjrqQ1
dc.description.jcrqQ3
dc.description.scieSCIE
dc.description.erihplusERIH PLUS
item.fulltextSin texto completo-
item.grantfulltextnone-
crisitem.project.principalinvestigatorPérez Torrado, Francisco José-
crisitem.author.deptGIR IUNAT: Geología de Terrenos Volcánicos-
crisitem.author.deptIU de Estudios Ambientales y Recursos Naturales-
crisitem.author.deptDepartamento de Física-
crisitem.author.deptGIR IUNAT: Geología de Terrenos Volcánicos-
crisitem.author.deptIU de Estudios Ambientales y Recursos Naturales-
crisitem.author.deptDepartamento de Física-
crisitem.author.orcid0000-0003-0688-0531-
crisitem.author.orcid0000-0002-4644-0875-
crisitem.author.parentorgIU de Estudios Ambientales y Recursos Naturales-
crisitem.author.parentorgIU de Estudios Ambientales y Recursos Naturales-
crisitem.author.fullNameFernández Turiel,José Luis-
crisitem.author.fullNameRodríguez González, Alejandro-
crisitem.author.fullNamePérez Torrado, Francisco José-
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